- Serologic evaluation will be used to assess exposure to syphilis, West Nile Virus, Chagas, CMV IgG, hepatitis B, and C, HIV I and II, and HTLV I/II. An HIV-I/II[+] and HTLV-1/II (+) donor will be rejected on medical grounds. Donors who been vaccinated against hepatitis B and who have antibodies against hepatitis B surface antigen are allowed.